Eva (Chua Zhuoyan) and Adam (Zhou Bohao) have been dating for more than ten years, but suddenly break up over a small matter. Adam, who was inexplicably separated, had sex with student Mandy (Wei Shiya) after drinking. But then Mandy accidentally found a record of 77 heartbreaks written by Eva in Adam's home. In the diary book, Eva's records of being hurt time and time again were vividly remembered... Adam was so guilty that he plucked up the courage to apologize to Eva in front of everyone. Unexpectedly, Eva found Mandy's belongings in Adam's home... Can she forgive Adam for the 78th time?